Bolt seal



FIG. 1 is a perspective illustration of the bolt seal according to our design, the perspective being from the top end of the bolt seal;

FIG. 2 is a perspective illustration of the bolt seal illustrated in FIG. 1, the perspective being from the bottom end of the bolt seal;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a bolt seal, as shown and described. 